LibWeb+LibWebView+UI: Update the selection keyboard on selection changes

When the selected text on a page changes, update the system selection
clipboard on supported systems (if primary pasting is enabled).

Libraries/LibWeb/DOM/SelectionchangeEventDispatching.h

@@ -10,6 +10,8 @@
 #include <LibWeb/DOM/Event.h>
 #include <LibWeb/DOM/EventTarget.h>
 #include <LibWeb/HTML/EventNames.h>
+#include <LibWeb/HTML/Navigable.h>
+#include <LibWeb/Page/Page.h>
 
 namespace Web::DOM {
 
@@ -56,6 +58,12 @@ void fire_a_selectionchange_event(T& target, Document& document)
 
     auto event = DOM::Event::create(document.realm(), HTML::EventNames::selectionchange, event_init);
     target.dispatch_event(event);
+
+    // AD-HOC: When the selection changes, inform the UI to update the primary pasteboard.
+    if (auto& page = document.page(); page.enable_primary_paste()) {
+        if (auto text = page.focused_navigable().selected_text(); !text.is_empty())
+            page.client().page_did_update_primary_selection(text);
+    }
 }
 
 }

Libraries/LibWeb/Page/Page.h

@@ -514,6 +514,7 @@ public:
     virtual void page_did_insert_clipboard_entry(Clipboard::SystemClipboardRepresentation const&, [[maybe_unused]] StringView presentation_style) { }
     virtual void page_did_request_clipboard_entries([[maybe_unused]] u64 request_id) { }
     virtual void page_did_request_primary_paste() { }
+    virtual void page_did_update_primary_selection(String const&) { }
 
     virtual void page_did_change_audio_play_state(HTML::AudioPlayState) { }
 

Libraries/LibWebView/Application.cpp

@@ -1103,6 +1103,14 @@ Utf16String Application::clipboard_text(ClipboardType) const
     return Utf16String::from_utf8(m_clipboard->data);
 }
 
+void Application::set_clipboard_text(String text, ClipboardType)
+{
+    m_clipboard = Web::Clipboard::SystemClipboardRepresentation {
+        .data = text.to_byte_string(),
+        .mime_type = "text/plain"_string,
+    };
+}
+
 Vector<Web::Clipboard::SystemClipboardRepresentation> Application::clipboard_entries() const
 {
     if (!m_clipboard.has_value())

Libraries/LibWebView/Application.h

@@ -130,6 +130,7 @@ public:
     };
     virtual bool supports_clipboard_type(ClipboardType) const;
     virtual Utf16String clipboard_text(ClipboardType = ClipboardType::Text) const;
+    virtual void set_clipboard_text(String, ClipboardType = ClipboardType::Text);
 
     virtual Vector<Web::Clipboard::SystemClipboardRepresentation> clipboard_entries() const;
     virtual void insert_clipboard_entry(Web::Clipboard::SystemClipboardRepresentation);

Libraries/LibWebView/WebContentClient.cpp

@@ -1166,6 +1166,12 @@ void WebContentClient::did_request_primary_paste(u64 page_id)
     }
 }
 
+void WebContentClient::did_update_primary_selection(u64 page_id, String text)
+{
+    if (auto view = view_for_page_id(page_id); view.has_value())
+        Application::the().set_clipboard_text(move(text), Application::ClipboardType::Selection);
+}
+
 void WebContentClient::did_change_audio_play_state(u64 page_id, Web::HTML::AudioPlayState play_state)
 {
     if (auto view = view_for_page_id(page_id); view.has_value())

Libraries/LibWebView/WebContentClient.h

@@ -185,6 +185,7 @@ private:
     virtual void did_insert_clipboard_entry(u64 page_id, Web::Clipboard::SystemClipboardRepresentation, String presentation_style) override;
     virtual void did_request_clipboard_entries(u64 page_id, u64 request_id) override;
     virtual void did_request_primary_paste(u64 page_id) override;
+    virtual void did_update_primary_selection(u64 page_id, String) override;
     virtual void did_change_audio_play_state(u64 page_id, Web::HTML::AudioPlayState) override;
     virtual void did_update_navigation_buttons_state(u64 page_id, bool back_enabled, bool forward_enabled) override;
     virtual Messages::WebContentClient::StartWorkerAgentResponse start_worker_agent(u64 page_id, Web::HTML::WorkerAgentStartRequest request) override;

Services/WebContent/PageClient.cpp

@@ -783,6 +783,11 @@ void PageClient::page_did_request_primary_paste()
     client().async_did_request_primary_paste(m_id);
 }
 
+void PageClient::page_did_update_primary_selection(String const& text)
+{
+    client().async_did_update_primary_selection(m_id, text);
+}
+
 void PageClient::page_did_change_audio_play_state(Web::HTML::AudioPlayState play_state)
 {
     client().async_did_change_audio_play_state(m_id, play_state);

Services/WebContent/PageClient.h

@@ -203,6 +203,7 @@ private:
     virtual void page_did_insert_clipboard_entry(Web::Clipboard::SystemClipboardRepresentation const&, StringView presentation_style) override;
     virtual void page_did_request_clipboard_entries(u64 request_id) override;
     virtual void page_did_request_primary_paste() override;
+    virtual void page_did_update_primary_selection(String const&) override;
     virtual void page_did_change_audio_play_state(Web::HTML::AudioPlayState) override;
     virtual Web::HTML::WorkerAgentId start_worker_agent(Web::HTML::WorkerAgentStartRequest&&) override;
     virtual void close_worker_agent(Web::HTML::WorkerAgentId, Web::HTML::WorkerAgentOwnerToken) override;

Services/WebContent/WebContentClient.ipc

@@ -123,6 +123,7 @@ endpoint WebContentClient
     did_insert_clipboard_entry(u64 page_id, Web::Clipboard::SystemClipboardRepresentation entry, String presentation_style) =|
     did_request_clipboard_entries(u64 page_id, u64 request_id) =|
     did_request_primary_paste(u64 page_id) =|
+    did_update_primary_selection(u64 page_id, String text) =|
 
     did_update_navigation_buttons_state(u64 page_id, bool back_enabled, bool forward_enabled) =|
 

UI/Qt/Application.cpp

@@ -235,6 +235,19 @@ Utf16String Application::clipboard_text(ClipboardType type) const
     return utf16_string_from_qstring(clipboard->text(mode));
 }
 
+void Application::set_clipboard_text(String text, ClipboardType type)
+{
+    if (browser_options().headless_mode.has_value()) {
+        WebView::Application::set_clipboard_text(text, type);
+        return;
+    }
+
+    auto* clipboard = QGuiApplication::clipboard();
+    auto mode = clipboard_mode(*clipboard, type);
+
+    clipboard->setText(qstring_from_ak_string(text), mode);
+}
+
 Vector<Web::Clipboard::SystemClipboardRepresentation> Application::clipboard_entries() const
 {
     if (browser_options().headless_mode.has_value())

UI/Qt/Application.h

@@ -54,6 +54,7 @@ private:
 
     virtual bool supports_clipboard_type(ClipboardType) const override;
     virtual Utf16String clipboard_text(ClipboardType) const override;
+    virtual void set_clipboard_text(String, ClipboardType = ClipboardType::Text) override;
 
     virtual Vector<Web::Clipboard::SystemClipboardRepresentation> clipboard_entries() const override;
     virtual void insert_clipboard_entry(Web::Clipboard::SystemClipboardRepresentation) override;